Complete example for maven in Intellij 11?

Our project will be using Maven.

I saw an example using Intellij with Maven, but it's really not an end-to-end example (http://wiki.jetbrains.net/intellij/Creating_and_importing_Maven_projects).

So, I was wondering if there was a complete "Hello World" type example of using Maven and what benefits Maven brings.

Reading about Maven, it seems like a great build tool and project management, but I can't quite wrap my head around it without some examples. Google searches haven't been that useful.

Therefore, can anyone recommend a real example using Maven perhaps even in a book?

Thanks in advance.

- m